This scientist/doctor discovered penicillin.
- Lister
- Linnaeus
- Erlich
- Pasteur
- Fleming
Fleming
This scientist/doctor's work proved that a specific bacterium caused a specific disease.
- Virchow
- Erlich
- Koch
- Lister
- Pasteur
Koch
Fungi and Protozoa are both:
- eukaryotes
- plants
- acellular particles
- prokaryotes
- viruses
Eukaryotes
A modified light microscope that takes advantage of differences in refractive indexes is called a:
- Phase Contrast Microscope
- Fluorescence Microscope
- Bright field Microscope
- Transmission election Microscope
Phase Contrast Microscope
Which of the following statement(s) regarding acidic dyes/stains is/are correct?
- Acidic dyes contain a positive chromophore
- Acidic dyes will be repelled by the bacterial cell surface and stain the background
- Eosin dye is an acidic stain.
- Safranin dye is an acidic stain.
- Acidic dyes are used as negative stains.
2,3,5
Atoms of an element with the same number of protons but different number of neutrons are called
- valence electrons
- isotopes
- salts
- anions
- cations
isotopes
The chemical bond in which atoms share electrons is called a(n)
- covalent bond
- peptide bond
- hydrogen bond
- ionic bond
- ether linkage
covalent bond
A buffer is:
- a solution that prevents extreme pH changes
- a strong acidic solution
- an alkaline solution
- a strong basic solution
- salt solution
a solution that prevents extreme pH changes
Eukarya includes all of the following except for:
- protists
- animals
- fungi
- plants
- viruses
viruses
Some bacterial have a structure called an axial filament, which is also called
- peritrichous flagella
- pili
- endoflagella
- fimbriae
- cilia
endoflagella
These are cell structures that are involved in protein synthesis in bacteria.
- flagella
- ribosomes
- nucelus
- phospholipid bilayers
- pili
ribosomes
Which of the following statements about the atom 12 6C is false:
- its mass number is 12
- it has 12 neutrons in its nucleus
- it has 6 protons in its nucleus
- its atomic number is 6
- it has 6 electrons orbiting the nucleus
it has 12 neutrons in its nucleus